Carton



Dec. 19, 1944.

w. P. FRANKENSTEIN 2,365,261.

CARTON Filed Nov. 17, 1939 6 Sheets-Sheet 1 INVENTOR. Wuum R I'ZANKE'NSTEIN ATTORNEY.

Dec. 19, 1944.

w. P. FRANKENSTEIN 2,365,261

CARTON Filed Nov. 17, 1959, e Sheets -Sheet 2 4e 4z Q? 25 4a 46 42 IN V EN TOR. WILLIAM F? FRRNKENSTEl/I by i Dec. 19, 1944.

w. P. FRANKENSTEIN CARTON Filed Nov. 17, 1939 6 Sheets-Sheet 3 INVENTOR. WILL/AM I? FRANKENSTEIN ATTORNEY.

Dec. 19,1944.

W. P. FRANKENSTEIN CARTON Filed Nov. 17, 1939 6 Sheets$heet 4 INVENTOR.

ILLIAM I. FRflNKEMSTi/n Dec. 19, 1944.

w. P. FRANKENSTEIN CARTON Filed Nov. 17, 1939 6 Sheets-Sheet 5 a ATTORNEY.

ll 4. INVENTOR.

BYY

Dec. 19, 1944. w. P.IFRAII\IKENSTEIN CARTON Filed Nov. 17, 1939 GSheets-Sheet s IN VEN TOR. WILLIAM I? FRANKENSTEIN N "we WQTTORNEYS.

sary position while filling the same.

Patented Dec. 19, 1944 UNITED STATES PATENT OFFICE William P. Frankenstein, Cincinnati, Ohio This invention relates to improvements in. a carton formed from a single piece or blank of card or fibre board material of the class'which is shipped to the user in a knocked down condition and is set up by merely actuating the sides or walls to a. position normal to the bottom.

In the past, numerous attempts have been made to provide such a box or carton, but, due to their construction, the sides were insufii ciently rigid to remain in their upright or normal position while being filled with the merchandise .to be subsequently shipped or dis, played therein, without the operator or filler holding the said sides or walls in their neces- In other attempts to produce a carton of the inexpensive variety, the construction was such that in setting up the carton, the same was damaged and a shoddy looking article resulted.

It is therefore one of the principal objects of the present invention to provide a relativelyin expensive carton adapted to be shipped to the user in a knocked down condition and in which,

when the walls are set up,- they remain in a vertical position with no sagging of the said walls, whereby theoperator or .filler may very readily and rapidly place the contents therewithin. I

Another object of this invention is the provision of a carton as above referred to, in which the corners of the carton walls are permanently secured to one another with certain walls having one or more folds therein, caused by knock-- ing down the carton,-and in which thesewalls are rigidly reinforced when in upright position normal to the bottom of the carton.

A further object of this invention is the pro vision of a one piece carton adapted to be shipped in a. knockeddown condition, and in which the folded walls, when raised from its knocked down position, is locked in the raised position, thereby looking all four. walls in position against inwardbending '01 sagging.

.A still further object of this invention is the provision of a four sided carton formed of a single blank .of card or fibre board material, adapted to be shipped to the user in a'knoc'ked down condition, in which certain of the walls are provided with folds to .efiect the knock down of the carton, and in which means are provided for permanently straightening the said folded walls of the carton. v

A still further object of the invention is the provision of an inexpensive carton and integral cover formed from a single blank of card orfibre Application November 17, 1939, Serial lie 1305,0011 3 Claims. 91. 229-34) board material adapted to be shipped to the user in a knocked down condition, and in which the walls, when erected to theirnormal position, are heldagainst inward or outward sagging, whereby the carton'may be readily'filled and its cover readily arranged in position relative thereto.

Other objects and-advantages of thepresent invention'should be readily apparent by the ref,- erence to the following specification, considered inconjunction with the accompanying drawings forming a part thereof, and it is to be understood that any modifications maybe made in theexact structural details there shown andudescribed,

within the scope of the appended claims, with? out .departing from or exceeding the'spiritof the invention, I

inkthedrawings: I Fig. '1 is a perspective view of a carton or box embodying the improvements of this invention and illustrated in a .set up position.

Fig. 2 is a perspective view .of-the box or car-- ton of-F ig. 1 when in a knocked down or shipping condition. A :Fig. 3 is a fragmentary, perspective view showing' the boxin the process of erection and'at a point between the knocked .down positioniof Fig.

2 and the fully erected position :of-Fig. 1.

Fig. 4 is a fragmentary, horizontal, sectional view. through one end of the box, taken on line 4-1 of Fig. 1.

Figs. 5 and 6are respectively fragmentary, sectional views taken through :the walls atright angles to one another, .on lines 5+4 and .6-.-.-6 on Fig.-j7 is .a plan view of th e iblank from which the carton :of Fig. 1 is -made,.;this blank showing the steps the process of manufacture after it has been blanked out- Fig. :8 isa view similar toFig. 7, showing the next two steps .intthe manufacture of the carton,

the steps being respectively shown at the left and right hand ends thereof.

' j-Ei-g. 9 again being a view similarto Figs. 7 and 8, and showing the next three steps in the manufeature of the canton of Fig; 1, one step being shown at the left hand end and the next two stepsat the right hand end thereof.

i0 is a-transversasectional view through the carton'when the knocked down condi operating structure of the carton at the carton walls or sides opposite from that shown in Fig. '7.

Fig. 12 is a perspective view of the blank of Fig. 11 in the completed. condition and knocked down.

Fig. 13 is a perspective view, with a small corner broken away, of the erected carton formed from the blank of Fig. 11.

Fig. 14 is a fragmentary, perspective view of a corner of a carton formed from a modified blank.

Fig. 15 is a plan view of the corner of a modified blank from which the corner of Fig. 14 is formed.

Fig. 16 is a perspective view showing the blank of Fig. 15 in a knocked down condition.

Fig. 17 is a fragmentary, vertical, sectional view through one of the walls of Fig. 14, taken on line l on said Fig. 14.

Fig. 18 is a fragmentary, longitudinal view through the knocked down view of Fig. 16, taken on line |8|8 on said Fig. 16.

Fig. 19 is a plan view illustrating in part the blank and in part the blank in folded, knocked down position, and which blank is modified to provide a combined carton and cover integral with one another, the blank being a modification of that shown in Fig. 11. i

Fig. 20- is a perspective viewshowing the carton of Fig. 9 in erected position and the cover in knocked down position.

Fig. 21 is a perspective view, partly in section, showing the carton and cover of Figs. 19 and 20 in erected and closed position,

Figs. 22 and 23 are respectively plan and perspective views similar to Figs. 19 and 20, utilizing the blank of Fig. 7 for forming a carton and integral cover.

Fig. 24 is a perspective, view ofa box or car ton with an integral cover made from a blank similar to that of Fig. '7 modified to include the cover.

Throughout the several views of the drawings, similar reference characters are employed to denote the same or similar parts.

As was noted above, this invention pertains to a box or carton formed of paper or fibre board material and may be described as of the more or less inexpensive type of such box or carton and is shipped to the user in a knocked down condition, requiring the user merely to lift two of the opposed walls and thereby fully erect the box or carton for use. It should be noted that throughout the specification, reference will be made toside walls and endwalls for the box or carton, but these termsare merely for clearness in description and. are relative terms, as any wall or walls designated as end walls, may, under other circumstances, be designated as side walls.

Specifically referring to the drawings, Fig. 1

shows the box or carton in its erected position and comprises a bottom 25 having upstanding therefrom the opposed end walls 26 and 21 and side walls 28 and 29. The box or carton of Fig. 1 was erected from the knocked down position of Fig. 2, where the carton isshown with the end walls 26 and 2'! as folded down on to the uppersurface of the bottom 25, with the side walls likewise folded down and parallel with the bottom, but with the ends thereof resting on top of the end walls.

This carton or box was formed from the blank of Fig. 7, which shows the bottom panel 25 defined by dotted lines 30, 3|, 32 and 33 which are the fold lines on which the end walls 26, 27, 28 and 29 are respectively upwardly bent. The end wall 26 is formed of a pair of panels 34 and 35,

, respectively defined by the left hand end of the blank and the solid and dotted lines 36 and 21 which are respectively cut and fold lines between the panels 34 and 35, and these out and score lines 36 and 3! define one end of the end panel 35 whose inner end is defined by the fold line 30. The panel 34 in the erected carton forms the inner section of the end wall, while the panel 35 forms the outer section thereof and in addition the panel 34 forms the means, as will later be described in detail, for maintaining the box or carton in its final or erected position.

The lateral ends, of the panel 35 are defined by dotted lines 38 and 39 which form a hinge donnection for attaching tabs 40 and 4|, and which tabs are employed for securing the side walls to the end walls. Hingedly connected with the attaching tabs 40 and 4| are the locking tabs 42 and 43, respectively connectedwith the tabs 4|! and 4| at the hinge or fold lines 44 and 45. The inner ends of the cut lines 36, between the end wall sections 34 and 35, are connected withthe adjacent corners of the bottom panel 25 by diagonal score or fold lines indicated in the drawings by dotted lines 46 and 41 and, as will later be made clear, constitute the hinge connection between the walls or sides of the box and carton whereby they may be folded to the knocked down position of Fig. 2.

The opposite end wall 2! is identical in all respects with that just described, and it is believed unnecessary to redescribe th component parts thereof, and they are indicated in the drawings by .the same reference characters as above employed.

The side walls 28 and 29 are merely panels of substantially the length of the box or carton bottom and a width equal to the heighth of the box. It should be noted, however, that the lengths of these sides may be enough shorter than the attached portion of the bottom panel to take care of the thickness of the blank when in erected position, since, with the blank as just described and as erected in Fig. 1, these side walls are within the end walls. Similar clearances are provided at the ends of the inner end wall sections 34, as well as at the ends of the attaching flaps 40 and 4| and locking flaps 42 and 43 so that the parts are properly lit to produce a neat construction.

With the blank died out as illustrated in Fig. 7 and above described, it is passed through a gluing and folding machine, the various steps being illustrated in Figs. 7, 8 and 9, each figure illustrating one or more operations in the complete manufacture of the box or carton. The first step is illustrated in Fig. 7, which consists of applying glue or adhesive to the attaching lugs 40 and 4| as well as applying glue or adhesive to the inner surface of the outer end wall section 35; these glue or adhesive spots being indicated by the reference characters 48 and 49 on the attaching tabs 40 and 4| and 50 on the inner end wall panel 35. It will be appreciated that in each of the manufacturing steps to be described, similar steps are effected at each end of the blank, and it will be readily understood that instead of applying the glue or adhesive to the tabs 40 and 4| and outer wall panel 35, the said glue may be panel 34.

With the glue on the the locking tabs 42 and 43 are folded'alon-g their score lines 44 and 45, on to the attaching tabs 49 and 4|, and the end wall panel 34 is folded alon the fold line 31 on to the panel 35- and sufficient pressure placed thereon to insure these parts'securely adhering to one another. This folding step in the process of manufacture is illustrated in the left hand end of Fig. 8. The next step consists of folding all of the parts just referred to along the score or fold line 30, thereby bringing the inner surface of the inner end wall panel against the bottom panel 25, and at the same time. bringing the locking tabs 42 and 43 against the inner surface of the side walls 28 and 29, as illustrated in the righthand endof Fig.8. The next step in the manufacture of the carton or box consists ofholding the end walls in theposition of the right hand end of Fig. 8

and folding the locking tabs, attaching tabs and tabs as above described,

the portions of the outer end wall panel beyond j the diagonal fold lines 46 and 41 along these fold lines 46 and 41 to the positions-illustrated in the left hand end of Fig. 9. In other words, this step of the process places the outer surface of the end wall panels on itself with the attaching and locking tabs extending temporarily beyond the bottom blank. This step is followed by the step of foldin the locking and attaching tabs back into parallel relations with the bottom of the panel and folding same along the scoreor fold lines 38 and 39 to the positions illustrated in the right hand end of Fig. 9. At this time, glue or adhesive, indicated by thereference characters 5| and 52, is applied to the opposite ends of the side walls, and these side walls then folded down on to the end walls to the position illustrated in Fig. 2 and suitable pressure applied to assure the adhesion of these parts. Itwill be appreciated that the glue or adhesive spots 5| and 52 may, instead of being applied to the end walls 28 and 29, be applied to the outer surface of the attaching tabs, or the exposed surface thereof, as seen in Fig.9. j

From the foregoing, it will now be appreciated that the knocked down position of the box or carton is made in one continuous process through a machine, and that it is ready for assembly by merely lifting the said end walls 26 and 2]. process of erecting the carton from'the knocked the completion thereof in Fig. 3, which shows the inner end wall panel 34 as arched, while passing between the locking tabs or lugs 42-and 43 to the erected and secured position. As will be seen from Fig. 3, the inner edge 53 of the locking tab or lug 43 is spaced from the outer wall panel 35 a distance which is substantially equal to the thickness of the board from which the carton is made, thereby providing a notch 54 into whichthe ends of the inner wall section 34 snap in the finally erected position, as illustratedin Figs. 1 and 4.

Figs. 4, 5 and 6 show thepositions of the differ'ent components of the carton blank when in erected position, showing the end wall as of double thickness, as inFigs. 4 and 5, with the end wall sections integral and folded at their centers. It will be appreciated, however, that the inner end wall panel 34 may be separate from the outer panel and held in positionby the glue or adhesive 5|] and still function as a set upmember. In Figs. 4 and 6, the attachment The - down to the erected position is illustrated near ofith'ei sideand end walls to one another and therelation-of the attachment'xand lockingtabs to $0116 another and to the rest of the structure outer end wall panel and will'prevent this wall from tending to assume the position into which it was bent in its manufacture and prior to its shipment. .By this construction, a: very grave fault of here-to-fore cartons of a similar nature is positively. and definitely overcome. At the same time, the said inner end wall panel 34 looks the side walls 28 and 29 in their erected position, since a relatively close and snug fitis had between this panel and the said side walls, thereby each reacting against the tendencyof theother to sagor fold to the position into which it was placed during the manufacture. In Figs. 11, 12 and 13, a box or carton of a. substantially similar construction is illustrated, except that the shorter or endwalls are formed of single thickness of material, while thelonger or normally. accepted side walls areprovided With the material for folding downthe walls. As shown in Fig. 13, the box or carton comprises a bottom 55, upstanding from which are the opposed end walls 56 and 51 and the opposed side walls 58 and 59, which are set up by the user from the knocked down position illustrated in Fig. 12.

The blank from which the carton of Fig- 13 is made is illustrated in Fig. 11 and hasthe bottom panel 55 defined by the fold or score lines:in-. dicatedby dotted lines 60, 6!, 62 and 63, and which score lines respectively, hingedly connect with the bottom paneL'the end walls 56 and 51 and the outer wall sections'or-panels 64 of the side walls 56 and 59. In this modification, the so-called end walls 56 and 51 are of single thickness, as were the said walls 28 and 29 of the carton or box in Fig. 1, while the so-called side walls 58 and 59 are of substantially double thicknessand are formed with the same configuration I and construction as were the end walls 26 and 21 above.

' Accordingly, the side wal156 inclues'the' outer wall section'or panel 64 to which is hingedly connected, along the dotted score line.65, the inner stantially equal to-the heighth of the said outer side wall panel section 64. Secured to theends of the outer side wall section 64, as bydotted score lines. Y68 and 69, are the attaching flaps 16 and H. turn have connected to them, by way of dotted score lines 12 and 13,.thelocking flaps .14 and 15.

The adjacent corners ofthe bottom panel 55 are connected with the inner ends of the'cut lines 61 by dotted score lines 16 and H. I

From the foregoing, it will be appreciated that the blank of Fig. 11 has the same construction as'that of Fig. 7, except'that the connecting and locking mechanismis carried by the so-called side walls of the carton or box instead of. by; the end walls. The blank of Fig. 11 passes through The attaching flaps .19 and H in the same manufacturing steps as that above described, and in each case two opposed walls 1 of the box or carton are folded down against the upper surface of the bottom panel, and the other remaining opposed walls are folded down parallel with the bottom, lying on the adjacent ends of the first pair of opposed walls. In order to erect the cartonor box from its knocked down or folded position to its usable position, it is merely necessary to swing upwardly the uppermost walls, which, through their hinge connection with the other walls, causes same to assume their erect position, and the co-operating locking means are snapped to position to hold the walls in their vertical erected position. In this connection, it should be noted that the locking tabs 14 and 75, when in their finally assembled position, are carried by the end walls 56 and 51, and spaced from the outer side wall panel sections 64 a distance sufiicient to permit the inner side wall panel section to snap therebehind.

In connection with the box or carton of Figs. 11, 12 and 13, it should be noted that thereis illustrated the minimum lateral dimension to which the box or carton may be conveniently made. In other words, the width or distance between the dotted fold lines 62 and 63 is just twice the heighth of the upstanding side walls, and with this type of construction the attaching flaps and H from each side wall would abut one another, thereby in efiect producing a knocked down wall box or carton which in its final erected position has double walls throughout. In this connection, it will be readily appreciated that any size box or carton may be made with double thickness end walls by merely making the attaching flaps of a sufficient length. In Figs. 14 to 18 inclusive, there is illustrated one corner of a modified construction, the modification consisting in the elimination of the lockingfia-ps, such as 42 from Fig. 7 or 15 from Fig. 11, the blank otherwise being identical with that described. With this modified construction, the glue spots 48 are eliminated from the attaching fiap 40 and in its stead, when the blank reaches the stage in its manufacture exemplified by the left hand end of Fig. 9, the ends of both the inner and outer wall section panels 34 and 35 have each, adjacent the out line 36, applied thereto spots of cement or adhesive 18 and 19. This type of cement or adhesive is such, which, when first applied, will adhere to the surface; but, when dry, will not adhere to a, second surface, regardless of the amount of pressure that is placed thereon, but which cement or adhesive, when brought into contact with the dry surface of a second spot of similar cement or adhesive, adheres to such an extent as to defy separation.

As will be seen in Fig. 18, these spots of cement or adhesive 13 and 19 are out of contact with one another when the carton is in a knocked down position. When erected, however, the spots 18 and 19 are brought into direct contact, as shown in Fig. 17, andzby pressing these spots to one another through pressure of the fingers applied to the inner and outer wall sections 34 and 35, they bond the said wall section panels to one another, and thereby lock the walls in an erected position, since the inner wall panel section 34 has a length to snugly engage the inner surfaces of the attaching flaps 40 and 4| as above described.

From this it will be seen that a blank and subsequent erected box or carton, as illustrated in Figs. 14 to 18 inclusive, has the same advantages and erecting simplicity as the one previously described, without the use of the locking tabs or lugs 42 and 43 or 14 and I5.

In Figs. 19, 20 and 21, there is illustrated a box or carton embodying the improvements of this invention, including an integral cover or lid for the box or carton. The example shown in these figures is based on the blank of Fig. 11; in other words, a blank with the connecting cover means located at the side, which carton carries the wallhinging and locking means. Specifically referringto Fig. 19, the blank there shown is provided substantially centrally of its length with a panel 80 located between score lines indicated in the drawings by dotted lines 8| and 82. The width of the panel is substantially identical with the heighth of the upstanding walls, as this panel forms the back for the box or carton. The inner side wall panel 66 is cut away, as between the cut lines 83 and 84, while the outer side wall panel 64 is cut away to provide a triangular shaped gusset 85, hingedly connected by the score line 86 with the adjacent portion of the outer panel section 64, and hingedly connected by the score line 81 to the adjacent portion of the back panel 80. The gusset is further provided with a score line 88 extending normal to the free edge of the gusset and intersecting the score lines 86 and 81.

The blank of Fig. 19 is put through the same manufacturing steps as the blanks of Figs. 11 and "7, and at one point in this process, a spot of glue 89 is applied to the back panel 86 adjacent the score line 81, or this glue may be applied to the gusset 85 between the score lines 81 and 88, so that when the side walls are folded down on to the bottom panel, the portion of the gusset between said last named score lines 8? and 88, is permanently and definitely secured to the back panel 80. In the manufacture of the box or carton with the cover integral therewith, and shown in Figs. 20 and 21, the finally folded blank takes the form' illustrated in the lower half of Fig. 19 and is in this condition when shipped to the customer, or with the parts as shown in the lower half of Fig. 19, that portion of the folded blank to the right of score line B! may be folded on to the top of the other portion.

When it is desired to set up this box or carton, one or the other of the end walls is raised. As shown in Fig. 20, for example, the left hand end wall was raised to ts final position, allowing the portion of the inner side wall panels adjacent thereto to snap into position and thereby partially raising the back panel 80 since the gusset connection 85 between the side walls and back panel will effect this position of the back wall with the folded or knocked down cover assuming the position shown in Fig. 20; that is, inclined downwardly. After the box or carton has been filled with the desired merchandise, the remaining or right hand wall, front of the cover, is raised to snap the inner side wall sections adjacent thereto into position, and the cover then placed over the box or carton, as illustrated in Fig. 21.

It will be appreciated that, instead of setting up the blank as just described, the right hand end thereof may be employed as the box or carton and the left hand end as the cover and setting up in this manner, as illustrated in Fig. 23.

In Figs. 22 and 23, a combined box or carton and its integral cover is illustrated, utilizing for this purpose the basic blank shown in Fig. 7; that is, with the end walls carrying the walls hinge connection and the locking device, and

back panel 90, and the gusset has a diagonal dotted or fold line 96. Again the back panel 99 is illustrated as having applied thereto, adjacent the fold line 95, a spot of glue 91, whereby the portion of the gusset 93 between the fold lines 95 and 96 is secured tothe back panel '90. This blank, in' the knocked down or folded position, is as illustratedin the lowerhalf of Fig. 22, and in order to erect thesaid'walls, the side walls 28 and 29 of the bottom portion, illustrated in Fig. 23, the left hand portion of the blank, is

raised to snap the front into position and hold the said side walls erect with the remaining or cover portion lying flat, parallel with the box or carton. As was noted above, either the portion to the right of the score line 92 or the portion to the left of the score line 91 may be used as the bottom and other as the top, depending upon which way the blank is laid down and usually printed. Y

It should be noted that a similar connecting arrangement between a box or carton and its integral cover is illustrated in U. S. Patent No. 1,993,

323, issued on March 5, 1935, to Wm. P. Frankenstein.

It will be appreciated that the panel forming the top for the carton will be slightly larger than the panel forming the bottom, in order to take care of the thickness of the depending walls from the top and so that they may be disposed around the walls of the bottom. It should also be noted that the walls of the top need not be as high as the walls for the bottom, as the top wall or flanges need not extend to the bottom of the box or carton walls, but since the material cut out to shorten the top walls or flanges would be waste material anyway, they have been shown as made the full heighth of the box or carton walls.

In Fig. 24, there is illustrated a box or carton made from a blank similar to the blank in Fig. '7,

inaknocked down," compact condition, requiring the userto merely lift the two uppermost exposed walls and readily snap same in position andbe lockedtherein, or, the said wallsmay bev permanently secured in position by'a light pressure between'the fingers, when the snap lock is not employed, but the Latex type: of cement of Fig. 15 isemployed. It will further be noted that the wall provided with the necessary bends, in order to'fold the same inwardly, is positively reinforced by a member at no time weakened by score or fold lines, and that this stiff member definitely, out- .wardly places the remaining walls, which, while without'score lines, is being positioned out of its original'foldedand pressed position. What isclaimed is:

1. A box orcart'on comprising a bottom, upst'anding walls from'the'sides of the bottom, two

of said opposed walls havingat opposite ends I thereof connecting flaps for respective permanent attachment to the adjacent'walls on the inner or opposed surfaces thereof, said connecting flaps having their lower edges spaced above the bottom, whereby the space between the opposed surfaces of the attached connecting flaps is less than the space between the opposed surfaces of the walls to which they are attached, said first mentioned opposed walls each having diagonal creases converging upwardly from the bottom and entirely traversing said walls, whereby the walls may be folded onto themselves and onto the bottom, a nonfoldable member carried by the upper edge of each of the foldable opposed walls and of a 'length substantially equal to the distance between the inner surfaces of said second mentioned pair of opposed walls, each of said nonfoldable members being secured in face contact to the inner surface of its respective foldable wall between the diagonal creases only thereof when the walls are in folded position, whereby upon erection of the walls the nonfolded member is forced within the space between the attaching flaps for holding the walls against sagging when erected, and locking flaps secured to the exposed surface of the attaching flaps and having a free edge adjacent said opposed walls and held against displacement except by force.

which sets up to thebox or carton of Fig. 1, but

with a top or cover integral with one of the side walls. In other words, the box or carton of Fig. 24 is made from a blank substantially identical with that in Fig. '7, but with a panel portion integral with the top edge of one of the side walls 23 and 29.

Specifically, and referring to Fig. 24, the end wall 28 has its top portion represented by a dotted or hinge line 98 hingedly connecting thereto the top panel 99. Hingedly connectedv to the three remaining sides of the top panel 99 are tabs lilo, fill and M32 which form flanges for the top to embrace the box or carton walls. It will, of course, be understood that the area of the top panel 99 is sufficiently greater than the area of the bottom panel 25 to permit the top flanges I00, H?! and IE2 to embrace the carton walls. From the foregoing, it will be noted that ther has been provided a box or carton which is relatively inexpensive to manufacture, and in fact would produce what is known in the trade as a cheaperbox, although it may be employed for the most expensive type of container or shipping carton, and in which the box or carton is shipped 2. A box or carton comprising a bottom, upstanding walls from the sides of the bottom, two of said opposed walls having at opposite ends thereof connecting flaps for respective permanent attachment to the adjacent walls on the inner or opposed surfaces thereof, said connecting flaps having their lower edges spaced above the bottom, whereby the space between the opposed surfaces of the attached connecting flaps is less than the space between the opposed surfaces of the walls towhich they are attached, said first mentioned opposed walls each having diagonal creases converging upwardly from the bottom and entirely traversing said wall whereby the walls may be folded onto themselves and onto the bottom, :1, nonfoldable member integral with and hingedly connected to the upper edge of each of the foldable walls between the diagonal creases only and free of said foldable walls outwardly from each of said creases, and said nonfoldable members being of a length substantially equal to the distance between theinner surfaces of said second mentioned pair of opposed walls, eachof upon erection of the walls'the nonfolded member is forced within the space between the attaching flaps for holding the walls against sagging when erected. l

3. A box or carton comprising a bottom, upstanding walls from the sidesof the bottom, two

of said opposed walls having at opposite ends thereof connecting flaps for respective permanent attachment to the adjacent, walls on the inner or opposed surfaces thereof, said connecting flaps having their lower edges spaced above the bottom, whereby the space between the opposed bottom, a nonfoldable member integral with and hingedly connected to the upper edge of each of the foldable walls between the diagonal creases only and free of said foldable walls outwardly from each of said creases and said nonfoldable member being of a length substantially equal to the distance between the inner surfaces of said second mentioned pair of opposed walls, each of said nonfolded members being secured in face contact to th inner surface of its respective foldable wall between the diagonal creases only thereof, when the walls are in folded position, whereby upon erection of the walls the nonfolded member is forced within the space between the attaching flaps for holding the walls against sagging'when erected, and means for holding the nonfolded member against displacement except by force.

WILLIAM P. FRANKENSTEIN. 

